Spirit Solar
Installers of heat pumps, insulation, and domestic and commercial solar PV (electricity) and solar thermal (hot water) systems.

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About Solar PV

Why Solar PV? How does solar PV work? Feed-in Tariffs / EPCs Guide prices and returns Returns calculator Solar PV for Schools, Farms, Commercial Panels, inverters, roof tiles, mounts Planning requirements, timescales Servicing & panel cleaning What to look for in an installer

What return can I get from my roofs

Step 1 - How many panels will fit? Step 2 - What output can I expect? Step 3 - Use our returns calculator Request a quote and we'll do it all for you!

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How many solar panels will fit on my roof?

System Size Calculator

Type of Roof

Detached

Semi-Detached

Roof Dimensions

Diagram of Inputs on Roof

1. Length of bottom of roof:
metres

2. Length of top of roof:
metres

3. Distance from eaves to ridge:
metres

Please Note:
Our picture shows a 'trapezium' shaped roof. However, this calculator will still give an accurate estimate for a square roof if you enter the correct dimentions.

Type of Panel (Module)

Brand	Model	Width	Height	Watts
Sanyo	HIT-N240SE10	798	1580	240
Sanyo	HIT-H250E01	861	1610	250
Trina	TSM-DC01	809	1581	185
Trina	TSM-DC05	992	1650	235
Sharp	NU185R1H	994	1318	185
Sharp	NUR245J5	994	1652	245
Suntech	STP190S-24/Ad+	758	1580	190
Suntech	STP240S-20/Wd	991	1665	240
ET Solar	ET-M572190B	808	1580	190
ET Solar	ET-P660235	992	1640	235
Azur	P 230-3 with 2P coating	992	1655	230
REC	235PE Black	950	1665	235

Click Here for more information on our panels.

Please Note:
This calculator is intended to estimate the total system size possible for a residential property. Please use this as a guide only.

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